Loudspeaker



FIG. 1 is a front perspective view of a loudspeaker showing the new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a side elevational view thereof;

FIG. 5 is an opposite side elevational view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines depict portions of the loudspeaker in which the design is embodied that form no part of the claimed design. 

CLAIM The ornamental design for a loudspeaker, as shown and described. 